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RecruitingHematologic DisorderBleeding DisorderConnective Tissue Disorder

ATHN Transcends: A Natural History Study of Non-Neoplastic Hematologic Disorders

Eligible age

All ages

Accepts

All genders

Locations

30 states

Healthy volunteers

No

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About this study

In parallel with the growth of ATHN's clinical studies, the number of new therapies for all blood disorders is increasing significantly. Some of the recently FDA-approved therapies for congenital and acquired hematologic conditions have not yet demonstrated long-term safety and effectiveness beyond the pivotal trials that led to their approval. In addition, results from well controlled, pivotal studies often cannot be replicated once a therapy has been approved for general use.2,3,4,5 In 2019 alone, the FDA has issued approvals for 24 new therapies for congenital and acquired hematologic conditions.6 In addition, almost 10,000 new studies for hematologic diseases are currently registered on www.clinicaltrials.gov.7 With this increase in potential new therapies possible, it is imperative that clinicians and clinical researchers in the field of non-neoplastic hematology have a uniform, secure, unbiased, and enduring method to collect long-term safety and efficacy data. As emphasized in a recently published review, accurate, uniform and quality national data collection is critical in clinical research, particularly for longitudinal cohort studies covering a lifetime of biologic risk.8

Sponsor: American Thrombosis and Hemostasis Network

You may qualify if…

  • 1. Any age
  • 2. Having a congenital or acquired blood disorder; or
  • 3. Having a bleeding phenotype as indicated by an age adjusted abnormal ISTH Bleeding Assessment Tool score with an unknown diagnosis; or
  • 4. Connective tissue disorder with bleeding tendency as indicated by an age adjusted abnormal ISTH Bleeding Assessment Tool score.
  • 5. Eligible for a currently active disease-specific arm.
  • 6. Concurrent enrollment in the ATHNdataset or current ATHNdataset participant.
  • Participants who meet any of the following inclusion criteria are eligible for enrollment into this cohort:
  • 1. Factor VIII or factor IX activity \<50%, without another explanation for low clotting factor other than congenital hemophilia or being a known carrier for congenital hemophilia; OR

You may not qualify if…

  • 1\. Does not qualify for inclusion in a currently activedisease-specific arm; participants may be eligible to enroll as future cohorts and arms are activated; 2. Unable to give informed consent or assent 3. Unwilling to perform study procedures
  • Cohort Participant Selection
  • Each participant is to be enrolled in the cohort for which they qualify as defined below.
  • Hemophilia Cohort
  • None
  • Von Willebrand Disease Cohort
  • None
  • Congenital Platelet Disorders Cohort

Where it's recruiting

Arizona

Phoenix

Arkansas

Little Rock

California

Los Angeles · Oakland · Sacramento · San Bernardino

Connecticut

Hartford · New Haven

Delaware

Wilmington

District of Columbia

Washington D.C.

Florida

Gainesville · Miami · Orlando · St. Petersburg

Georgia

Atlanta · Savannah

Illinois

Chicago · Peoria

Indiana

Indianapolis

Iowa

Iowa City

Louisiana

New Orleans

Source: ClinicalTrials.gov · NCT04398628 · last updated 2026-01-12